[Bug c/105539] -ftrivial-auto-var-init=zero happening too late?

[kees at outflux dot net via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105539

--- Comment #1 from Kees Cook <kees at outflux dot net> ---
(Also this doesn't warn about y being used uninitialized.)